# Alexandria x402 API – Fitment Check

> Alexandria x402 API – Fitment Check is a paid API for AI agents from x402-alexandria.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-02).

Checks whether a specific automotive part fits a given vehicle by badge, model, and year

## Facts

- Endpoint: GET https://x402-alexandria.onrender.com/fitment/check?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/alexandria-x402-api-fitment-check-572077ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mVSFPeL4sC0spDtf-GJhG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability alexandria-x402-api-fitment-check-572077ee
```

Example prompt: Can you check if a door handle fits a 1994 Suzuki Swift using the Alexandria parts API?

## When to prefer this

Choose this endpoint when an agent needs to verify or discover whether a specific automotive part is compatible with a particular vehicle by year, badge, and model. It is ideal for DIY repair assistants, mechanic tools, or automotive e-commerce agents that need real-time fitment data without maintaining their own parts database. Best used when the user already knows the part type and vehicle details.

## Known failure modes

- Missing required 'part' query parameter returns a 400 error
- Unrecognized vehicle identifier may return empty results or no matches
- Payment failure via x402 protocol results in a 402 Payment Required response
- Ambiguous part description may return zero or irrelevant matches
- Rate limiting or server unavailability returns 503 or timeout

## How this service works

Automotive parts intelligence for agents helping people fix cars. Read-only. Priced per call via the x402 payment protocol (USDC). Terms of service: GET /terms (free).

## Output

Returns fitment compatibility data indicating whether the specified part matches the given vehicle, along with a list of matching parts up to the specified limit. Includes vehicle-part compatibility details such as part names, fitment confidence, and relevant metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "part"
     ],
     "properties": {
      "part": {
       "type": "string",
       "description": "Part description, e.g. 'door handle'"
      },
      "limit": {
       "type": "integer"
      },
      "vehicle": {
       "type": "string",
       "description": "Badge/model/year, e.g. '94 swift'"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/alexandria-x402-api-fitment-check-572077ee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-alexandria.onrender.com](https://www.zero.xyz/host/x402-alexandria.onrender.com/llms.txt)